SSH总结（二）

1、文件的操作，读写文件，解决乱码问题

读文件

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InputStreamReader isr = new InputStreamReader(new FileInputStream(new File(path)), "UTF-8"); BufferedReader reader = new BufferedReader(isr); String s; while ((s = reader.readLine()) != null) {     content += s + "\n"; } reader.close();

 写文件

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Writer writer = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(newFile1.getAbsolutePath().toString()), "UTF-8")); writer.write(content); writer.close();

 2、struts2常用标签

单选框：<s:radio name="Gender" list="#{'男':'男','女':'女'}" listKey="key" listValue="value" value="'男'" />

时间格式化：<s:date name="publishTime" format="yyyy年MM月dd日 HH:mm:ss" />

下拉框： <s:select list="#request.role" name="role1" value="roleName" key="id" headerKey="0" headerValue="清选择角色"></s:select>

3、ajax上传文件

ajax上传文件主要是使用了ajaxfileupload.js插件，ajax代码如下所示：

 HTMl代码：

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1 2	<input id="fileToUpload" type="file" size="20" name="myFile" class="input"> <button type="button" id="buttonUpload" data-dismiss="modal" class="btn btn-primary">上传</button>

　js代码：

 

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$("#buttonUpload").click(function() {     //验证图片格式     var format = $("#fileToUpload").val();     var type = format.substring(format.lastIndexOf(".") + 1, format.length).toLowerCase();     onsole.info(format);     console.info(type);     if (type != "jpg" && type != "jpeg" && type != "bmp" && type != "gif" && type != "png") {         alert("请上传正确的图片格式");         return;     }     $.ajaxFileUpload({         url : 'notice_AddImage.action',//处理图片脚本         ecureuri : false,         fileElementId : 'fileToUpload',//file控件id         dataType : 'text',         success : function(data) {             $("#dd").html(data);             var value = $("#dd pre").html();             if (value == "undefined" || value == null) {                 value = data;             }             console.info("dd:" + value);             $("#btn_image").val(value);                 console.info("image:" + $("#btn_image").val());                 $("#tooltip").html("图片导入成功");             },             error : function(data) {                 $("#dd").val(data);                 console.info("error");                 alert("error");         }     }); });

　　

java代码：

 

// myFile属性用来封装上传的文件
    private File myFile;

    // myFileContentType属性用来封装上传文件的类型
    private String myFileContentType;

    // myFileFileName属性用来封装上传文件的文件名
    private String myFileFileName;
    InputStream is;
        try {
            is = new FileInputStream(myFile);
            // 设置上传文件目录
            String uploadPath = TemplateUtils.BASEPATH + "\\upload";
            // 重命名文件
            String fileName = StringUtils.getUUID() + this.getMyFileFileName().substring(myFileFileName.lastIndexOf("."), myFileFileName.length());
            // 设置目标文件
            File toFile = new File(uploadPath, fileName);
            // 创建一个输出流
            OutputStream os = new FileOutputStream(toFile);
            // 设置缓存
            byte[] buffer = new byte[1024];
            int length = 0;
            // 读取myFile文件输出到toFile文件中
            while ((length = is.read(buffer)) > 0) {
                os.write(buffer, 0, length);
            }
            // 关闭输入流
            is.close();
            // 关闭输出流
            os.close();